Abstract:

We fabricate split-ring-resonator arrays via direct laser writing of
polymers, followed by atomic-layer deposition of titania,
chemical vapor deposition of silver, and focused-ion-beam
milling. While structures like that have been fabricated previously
by other means, our approach here allows for a direct
comparison with the optical properties of corrugated metal surfaces,
which are fabricated along the same lines. This comparison
reveals substantial differences regarding the magnetic metamaterial
properties. In particular, we find that the optical response of
the corrugated metal surfaces is due to a higher-order magnetic
resonance, whereas that of the split-ring resonators stems from
their fundamental magnetic resonance.

last change:
2012-01-09 KIT – The Research University in the Helmholtz Association